Related Party Transactions - Summary of Reimbursed by FS Real Estate (Details) - Related Party - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2025
Related Party Transaction [Line Items]
Amount of Expense Reimbursement	$ 1,247	$ 342	$ 139	$ 1,728
Recoupable Amount	1,247	342	139	1,728
Recoupment paid or payable to sponsor	0	0	0	0
Expired Amount	$ 0	$ 0	$ 0	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details